[英]View model does not bind correctly C#
我有一个类名BrowseViewModel
和一个名为BrowseDialog
类我希望将BrowseViewModel
绑定到BrowseDialog
但是当我在我的一个按钮上写入我的 Click 命令的绑定时,我第二次启动程序时出现错误,这是我的代码.
浏览对话框.xaml
<Window x:Class="TextalkApi.BrowseDialog"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:TextalkApi"
mc:Ignorable="d"
Title="BrowseDialog" Height="248.361" Width="427.459">
<Grid>
<Button Content="Browse" HorizontalAlignment="Left" Margin="267,11,0,0" VerticalAlignment="Top" Width="75"/>
<TextBox x:Name="FileDialog" HorizontalAlignment="Left" Height="23" Margin="10,10,0,0" TextWrapping="Wrap" Text="{Binding webUrl}" VerticalAlignment="Top" Width="244"/>
<Button Content="Save" HorizontalAlignment="Left" Margin="267,166,0,0" VerticalAlignment="Top" Width="75" Click="{Binding SaveCommand}" />
<TextBox HorizontalAlignment="Left" Height="23" Margin="10,38,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
</Grid>
</Window>
浏览视图模型
using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Input;
using System.Threading;
using System.Threading.Tasks;
using System.Configuration;
using System.Collections.Specialized;
using System.IO;
namespace Data
{
public class BrowseViewModel : BaseViewModel
{
#region public variables
public string webUrl { get; set; }
#endregion
#region Public Commands
public ICommand SaveCommand { get; set; }
#endregion
#region Constructor
public BrowseViewModel()
{
this.SaveCommand = new RelayCommand(SaveFilePath);
}
#endregion
#region Private methods
private void SaveFilePath()
{
if (File.Exists(webUrl))
{
ConfigurationManager.AppSettings.Add("WebUrl", webUrl);
}
else
{
}
}
#endregion
}
}
浏览对话框.xaml.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Shapes;
using System.IO;
using Data;
namespace TextalkApi
{
/// <summary>
/// Interaction logic for BrowseDialog.xaml
/// </summary>
public partial class BrowseDialog : Window
{
public BrowseDialog()
{
InitializeComponent();
this.DataContext = new BrowseViewModel();
}
}
}
错误是System.Windows.Markup.XamlParseException
问题出在
<Button Content="Save" HorizontalAlignment="Left" Margin="267,166,0,0" VerticalAlignment="Top" Width="75" Click="{Binding SaveCommand}" />
在你的 xaml 中。
您不应该将Click
属性绑定到命令,而是使用Command="{Binding SaveCommand}"
。
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